Quick-setting self-leveling mortar

Abstract

The invention provides a quick-setting self-leveling mortar. The quick-setting self-leveling mortar is prepared from, by mass, 16-18% of 42.5-strength ordinary Portland cement, 7-10% of stone powder,42% of 0-1.2 mm machine-made sands, 5-15 % of 1.2-2.4 mm machine-made sands, 18-28% of 2.4-4.75 mm machine-made sands, 0.02-0.03 % of cellulose ether, 0.02% of a thixotropic lubricant and 0.1% of a water reducing agent. All the components are mixed; when the mortar is used, 14-16% of water is added, and uniform mixing is performed for instant use; components adopting the machine-made sands, gradation has good regulation performance, and the stability of the product can be ensured; the stone powder is ash powder sucked out by a dust collection system in the limestone crushing process, and the stone powder is used as an additive, so the stone powder is absorbed to prevent the ash powder from causing air pollution and improve the crushing environment, the resource utilization rate is increased, and the stone powder is prevented from being stacked at will; and the magnesium aluminum silicate thixotropic lubricant has high hydrophilicity, and the thixotropic lubricant forms non-Newtonian liquid type thixotropic gel in an aqueous solution, so that the self-leveling mortar is easy to flow.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a fast-setting self-leveling mortar. [0002] technical background [0003] With the development of modern construction technology, the construction mortar used in the project is also developing and innovating. Traditional construction mortar is mixed on site and widely used in engineering, but it cannot meet the requirements of modern construction industry because the quality cannot be effectively controlled. In order to better meet and realize the requirements of modern architecture, a new type of building mortar with high product quality, green environmental protection, easy transportation and convenient construction - self-leveling mortar came into being. Self-leveling mortar refers to the powdery mixture made by mixing fine-quality aggregates selected according to requirements, quantitative cementitious materials (such as cement) and various high-performance trace additives...

AI Technical Summary

Problems solved by technology

The existing self-leveling mortar mostly uses river sand as the aggregate. Due to different collection locations, the aggregate gradation is relatively unstable, and its setting time is long, which is greatly affected by environmental factors, which may easily lead to unstable construction quality. , and actually affect the later construction progress

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